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Critical Accounting Policies and Estimates - Additional Information (Details) - USD ($)
$ in Millions
6 Months Ended
Nov. 28, 2020
May 30, 2020
Critical Accounting Policies And Estimates [Line Items]    
Finished goods $ 53.0 $ 51.8
Raw material 4.0 3.6
Work in progress 2.5 2.1
Inventory valuation reserves $ 5.7 $ 5.4
Maximum    
Critical Accounting Policies And Estimates [Line Items]    
Services revenue recognized as percentage of aggregate revenue 5.00%